9/20/2006 7:01 PM PDT

No They Din't! Jilted Exes Dish About Brit and Buffy

Jackson, more well known for being the ex of Kevin Federline than her appearances on various UPN shows, explains her pain of breaking up in the public eye, telling Ablow, "My oldest daughter Cassie would come home from school in tears, everybody wanted to know, 'Mommy why did Kevin do this? Why this? Why that? People were teasing me,' That was the only part that just killed me."

Shar also talks about her relationship with Britney Spears, Federline's new wife and baby-mama, saying, "She's part of our extended family." She does add, however, that she has not met their children. "I keep my distance," she says.

Also on the show is Marcia O'Brien, whose husband, Olympic skater Lloyd Eisler, left her for his "Skating with the Stars" partner and star of the film version of "Buffy the Vampire Slayer" Kristy Swanson.

O'Brien was pregnant with the couple's second child when she found out about her husband's second stint of infidelity, though Eisler claims he was not having an affair with the Swanson while partnered with her on "Skating."

O'Brien tells Ablow his claims are unfounded, calling them, "A complete lie. I have emails which he sent me where he admits to when they started sleeping together, how many times they had slept together. I went through a series of STD testing given the fact that I was pregnant."

Swanson is now pregnant with Eisler's baby, due on Valentine's Day.

Jackson and O'Brien will be joined by former supermodel Angie Everhart, Sylvester Stallone's ex-girlfriend and the ex-wife of George Hamilton's son Ashley on "The Dr. Keith Ablow Show" tomorrow.